There are far more options for saddle clamps now.
I personally would not chose a 3D printed one, go for one of the metal types.
If you can stick a decent Arca adaptor and QR plate under it as it makes changing options so much easier.
A heavy duty ball head too. Or levelling plate at least.
The Vector Optics Aluminium Rifle Rest Tripod Saddle Mount provides a secure and stable platform for precision shooting, using a durable aluminium alloy construction for reliable field performance.
www.opticswarehouse.co.uk
or
CNC machined from a solid block of aluminum - Black oxide stainless steel bolt and guide rods -Hard anodized finish (a resilient surface which serves as an excellent base coat for custom camouflage paint) - 1/4-20 stainless steel mounting threads and 3/8-16 back up threads - CNC machined torque...
www.opticswarehouse.co.uk
Metal is just (IMO) a better material for this use.
Yes I do have one of the 3D printed ones to compare.